Method for reducing shadows and/or noise in a digital image
US6671419B1 · kind B1 · utility
11Cited by
5References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 2, 1999 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | Jul 2, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T5/94
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Briefly, in accordance with one embodiment of the invention, a method of reducing shadows and/or noise in a digital image includes the following. A noise floor for the digital image is estimated. A threshold level for a difference image of the digital image and a background image is determined based, at least in part, on the noise floor estimate. The digital image is modified based, at least in part, on the determined threshold level and the difference image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.